SHIPS'   LIGHTS  AND  REGULATIONS
9. If you were under way in either a sailing ship or steam
you encountered fog or mist, etc., what would you do in oS
comply with the Regulations?
I should at once commence giving the required fog signal, and go at
a moderate speed, having careful regard to existing circumstances and
conditions. I should also keep an efficient lookout, and bear in mind
Art. 29.
10.	If the vessel you are in is a steamship, what further precaution are
you required to take if you hear apparently forward of your
beam the fog signal of another vessel, the position of which is not
ascertained?
ks far as the circumstances of the case permit I must stop my engines,
and then navigate with caution until danger of collision is over.
11.	Describe the fog signals to be given by fishing vessels.
* If of 20 tons gross tonnage or upwards, they shall at intervals of
not more than 1 minute make a blast; if steam vessels with the whistle
or siron, and if sailing vessels with the fog horn, each blast to be followed
by ringing the bell.
12.	What sound signal must sailing vessels and boats of less than 20
tons gross tonnage make?
If they do not give the signal prescribed for larger vessels, they
must make some other efficient sound signal at intervals of not more
than 1 minute; this applies to both ordinary and fishing vessels.
13.	What is the daymark for a vessel at anchor?
A black ball forward at some ports, but it is not international.
 14.	What is the day signal for a vessel aground in or near a fairway?
Only such signal as the Port Authority may direct,
 15.	What is the fog signal for a vessel at anchor over 350 feet in length?
Ring the bell forward every minute.
16.	What fog signal is given by a vessel being towed?
The same as the towing vessel, viz., a prolonged blast followed by
two short blasts.
17.	What is the fog signal for a vessel aground in a fairway?
None specified but ring the bell every minute to attract attention.
When being approached by another vessel sound also the Morse
letter U (--—) meaning "You are standing into danger," See page 625.